Detecting user focus on hinged multi-screen device

A computer-implemented method comprising:

• detecting a first touch input via a capacitive touch sensor of a first display device of a pair of display devices of a mobile computing device, a second touch input via a capacitive touch sensor of a second display device of the pair of display devices, and a third touch input via a capacitive touch sensor of a side of the mobile computing device, the pair of display devices being arranged to face away from each other;
• determining an orientation of the mobile computing device based on a detected pattern of the first touch input, the second touch input, and the third touch input;
• determining which display device of the pair of display devices has a current user focus based on at least the determined orientation of the mobile computing device;
• and
• performing a predetermined action based on the current user focus.

A mobile computing device comprising:

• a processor;
• two or more sensor devices including a first sensor and a second sensor, the first sensor consuming less power than the second sensor;
• a pair of display devices including a first display device and a second display device arranged to face away from each other;
• the processor being configured to:
• determine a current user focus indicating that the first display device of the pair of display devices is being viewed by the user, and that the second display device of the pair of display devices is not being viewed by the user, where to determine the current user focus, the processor is configured to:
• receive a first signal from the first sensor and determine a candidate user focus based on the first signal at a first computed confidence level,
• determine that the first computed confidence value does not exceed a predetermined threshold, and in response to this determination, powering up the second sensor,
• receive a second signal from the second sensor,
• determine the candidate user focus based on the second signal and the first signal at a second computed confidence level, and
• determine whether the second computed confidence level exceeds the predetermined threshold, and if so, determine that the current user focus is the candidate user focus;
• and
• reduce a power usage of a display device that does not have the current user focus.